Ask question

Ask question

All categories

3 years ago

10

HELLPP!!!!!!!!!!!!!!!!!!!!!!!!!

1 answer:

Genrish500 [490]3 years ago

6 0

$\left\{\begin{array}{ccc}2x-3y=-27&|\cdot3\\-3x+2y=23&|\cdot2\end{array}\right\\\underline{\left\{\begin{array}{ccc}6x-9y=-81\\-6x+4y=46\end{array}\right}\ \ \ \ |\text{add both sides}\\.\ \ \ \ \ \ -5y=-35\ \ \ \ \ |:(-5)\\.\ \ \ \ \ \ \ \ y=7\\\\\text{put the value of y to the first equation}\\\\2x-3(7)=-27\\\\2x-21=-27\ \ \ \ |+21\\\\2x=-6\ \ \ \ |:2\\\\x=-3\\\\\text{Answer:}\ x=-3,\ y=7\to\boxed{(-3,\ 7)}$

You might be interested in

I WILL GIVE BRAINLIEST HELP PLEASEEEE HELP PLEASEEE

Lady bird [3.3K]

Answer:

-39

Step-by-step explanation:

$\left(-3\right)^3-\sqrt[3]{27}-4^3\left(\sqrt[3]{64}-\left(2\right)\left(2\right)\right)-\frac{\left(3\right)^3\left(2\right)}{6}$

$-27-3-64\left(4-4\right)-\frac{54}{6}$

$-27-3-\frac{54}{6}$

$-27-3-9$

Which gives us -39.

5 0

3 years ago

Write mathematical sentence for: Sixteen is less than one more than a number

ollegr [7]

Answer:

16<n+1

Step-by-step explanation:

Word by word... it ends with this equation..

5 0

3 years ago

Math homework plz help

Marina CMI [18]

1/4 is the simplest form

8 0

2 years ago

Read 2 more answers

What are the abbreviations for a milliliter, a megameter, and a centigram, respectively?

babunello [35]

The answer that you are looking for is, ml, Mm, cg

7 0

3 years ago

Read 2 more answers

The formula for the area of a triangle is A = 1/2 bh, in which b represents the length of the base and h represents the height.

Sauron [17]

Answer:

30 mm

Step-by-step explanation:

Formula: A = 1/2bh

Substitution: 240 = 1/2b • 16

Solving:

240 = 8b

240 = 8 • <u>3</u><u>0</u>

b = 30 mm

3 0

3 years ago